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Articles | Tropical Oceanographic Research Frontiers | Volume 1 - Issue 1 - 2026 | 19-31 |
© 2026 by the author(s), and is licensed under the Creative Commons Attribution 4.0 International (CC BY 4.0) License Creative Commons Attribution 4.0 International (CC BY 4.0) License

The Effect of Submersible Light Attractors on Tidal Trap Fisheries: Implications for Length at Maturity

Author(s): Muhammad Natsir Kholis 1 ORCID https://orcid.org/0000-0001-9172-4490 , Gondo Puspito 2 ORCID https://orcid.org/0000-0002-1573-7334 , Mohammad Imron 2 , Budy Wiryawan 2 ORCID https://orcid.org/0000-0003-1958-5769 , Wazir Mawardi 2 ORCID https://orcid.org/0009-0009-1747-9381 , T. Ersti Yulika Sari 1 , Muhamad Yogi Prayoga 1 , Erliantina Arridhaty Akita 1 , Amraini Fitri 1 , Irwan Limbong 1
Author(s) information:
1 Faculty of Fisheries and Marine Science, Department of Fisheries Resource Utilization, Riau University, Pekanbaru, Indonesia
2 Faculty of Fisheries and Marine Science, Department of Fisheries Resource Utilization, IPB University, Bogor, Indonesia

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Tropical Oceanographic Research Frontiers

Volume 1 - Issue 1 - 2026

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This study examined the impact of Submersible Light Attractors (SAL) on catch composition and Length at Maturity (Lm) of fish in tidal trap (gombang) fisheries in the Bengkalis Strait, Indonesia. Tidal traps, which are passive and static fishing gear, often capture undersized fish, posing a threat to the sustainability of fish stocks. The use of SAL aimed to improve catch efficiency and selectively target mature fish, thereby enhancing fishery management. The experiment compared catch composition and Lm between two fishing treatments: one with SAL (P1) and one without SAL (P0). The results showed a 17.5% increase in total catch weight when SAL was used, with significant improvements in catch size, particularly for demersal and pelagic fish species. The study indicated that SAL not only increased catch quantity but also enhanced gear selectivity, thereby reducing the bycatch of immature fish. These findings underscore the role of SAL in promoting sustainable fishing by improving catch size distribution and supporting fish population conservation. The use of SAL was recommended as a cost-effective tool for enhancing the ecological and economic viability of small-scale fisheries.

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SUBMITTED: 25 November 2025
ACCEPTED: 05 February 2026
PUBLISHED: 9 February 2026
SUBMITTED to ACCEPTED: 72 days

Keywords
Submersible light attractors (SAL) Tidal trap Length at maturity (Lm) Sustainable fishing Small-scale fisheries
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